Dungeons 1 - The Dark Lord: The Last Level

In the re-envisioning of Dungeon Keeper, you are the evil boss of an underground fortress, which you need to build up and lure enemies into. After they had some fun in your dungeon (getting gold, fighting monsters, reading stuff in the library or fetching cool items in the armory), their "Soul" is filled and are - so to say - ready to be killed. After that, they get thrown into prison and tortured to harvest that sweet Soul Energy, with which you can buy prestige objects. These do not only allow you to build better / higher tier items, but also directly strengthen your hero!